Exercise system for controlling a video game



FIG. 1 is a perspective view showing the new design;

FIG. 2 is a left side view in elevation thereof;

FIG. 3 is a right side view in elevation thereof;

FIG. 4 is a top view in plan thereof;

FIG. 5 is a bottom view in plan thereof;

FIG. 6 is a rear view in elevation thereof; and,

FIG. 7 is a front view in elevation thereof. 

The ornamental design for an exercise system for controlling a video game, as shown and described. 